Wheeled plow.



W. E. JOHNSON.

` WHEELBD PLOW APPLIUATION FILED MAR. 1B, 1907. 905,079. Patented N`ov.24,190s.

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w.. E. JOHNSON. WHEELED PLOW. APPLIOATIO FILED MAR; 18, 1907.

Patented Nov. 24, 1908.

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WHEELED PLOW l APPLICATION FILED HAB. 18, 1907. 4 905,079. Patented Nov. 24, 190s.

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WHEELED PLOW. APPLICATION Hmm MAB. 1a, 1907.

Patented No'v. 24, 1908.

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114': NoRRls P i UNITED sTATEs ,PATENT oEEioE.

WILLIAM E. JOHNSON, OF ROCK` ISLAND, ILLINOIS, ASSIGNOR TO ROCK ISLAND PLOW GOM- PANY, `OF ROCK ISLAND, ILLINOIS, A CORPORATION OF ILLINOIS.

WHEELED PLOW. 4

Speeication of Letters Ipatent. Application led March 18, 1907. Serial No. 362,822.

Patented Nov. 24, 1908.

To all whom it may concern:

Be it known that I, WILLIAM: E. JOHNSON, a citizen of the United States of America, and resident of `Rock Island, Illinois, have invented a certain new and useful Improvement in Wheeled Plows, of which lowing is a specification. j

My invention relates to wheeled plows `in general, butrmore particularly to wheeled plows in which theplow beaml is hung from the frame by bails or swinging connections, and especially to plows of this character in .which an arrangement of foot levers-is employed for lifting and lowering the plow in the frame. i

Generally stated, the object `of my invention is the provision of an `improved arrangement of foot levers and springs for'lifting and lowering the plow; v

A special object of my invention is the provision of an arrangement by which the straightening of one toggle tends to lock the plow out of the ground, while the straightening of another toggle tends to lockthe plow in the ground. j

A further object of my invention is the provision of a device to assist the straightening out of the lifting-toggle. and also aid in locking the plow moresecurely in the ground. A furtherv object is an improved. method of attaching the liftingspring to the bail. It is also an object, of course, to provide certain details and features of improvement and combinations tending `to increase the general effiiency and serviceabilityV of a wheeled plow or other .implementv of this particular character. J

To the foregoing and other useful ends, my invention consists in matters hereinafter set forth and claimed.` y In the accompanying drawings Figure-1 is a side elevation of aplow embodying Vmy improvements. Fig. 2 is an enlarged detail of a portion` of Fig. 1 illustrating the foot lever arrangement embodying the principles of my invention, showing the-same vin position to lock the plow `beam in `a raised or elevated position. Fig. 3 vis a similar view showing the `partsinposition to lock the plow beam `in its lowered position. Fig. 4 is an enlarged plan view of a part of Fig. 1. Fig. 5 is a detail sectional view of one of the toggle joints. .'Fig. 6 is an: enlarged detail view of the constructionby which the lifting foot lever 1s connected with oneof thetoggle the folarms or. links. Fig. 7 is a section onk line 7 '-7 in Fig. 6. Fig. 8 is a detail perspective view of the end of the hub on one of the tog- 'gle` arms or links, which engages the "hub portion ofthe foot levers. Fi 9 is an enlarged'elevation of a portion o Fig. 1 showing the method of `attaching the lifting spring( Fig. -lOis a plan view of Fig. 9. Fig. l1 is .an enlarged sectional view showing the method of shifting the position of the supporting hook. Fig. l2 is aV detail of Fig. 9, showing the hook in horizontal position. i

Asthus illustrated the frame A of the plowmay be of any suitable, known or approved construction, and may be supported on wheels in the usual manner. The plow beam B canbe hung on bails in the usual manner, such, .for example, as the rear bail O. With this arrangement the plow beam with its plow o or other implement is free to bev `swung up and down. The usual spring Dis provided for assisting in raising the plow from the ground.

The lifting arrangement consists of a bifurcated toggle-arm E hung on the frame A, and another toggle arm c pivotally conneoted with the plow beam, the two toggle arms being pivotally joined together by a bolt c1, and by thehub c2 which is integral with the arm c. This hub lockingly engages the hub portion of the lifting foot lever e3, and the armV E is loosely mounted upon the hub portion e2, as shown more clearly in Fig. 6. The arm E is provided with an ear c4 having a set screw c5 adapted to bear upon the toggle arm c. With this arrangement the toggle connection thus provided can` be `adjusted so as to permit its joint to pass to the center. In this position the toggle connection locks the plow in the ground. By depressing the foot lever e3 the plow beam will befraised to the position shown in Fig. 2, the toggle arms E and e breaking j ointdownwardly and rearwardly to bring the plow into its Araised position. In this way the foot lever e3 is applied directly to the joint or knuckle of the toggle connection by which the plow beam is lifted to raise the plowv or other implement out of the ground.

The arrangement by which the plow is lowered to the ground consists of a depressing foot leverfF which is pivotally mounted upon the `plow beam at f, and which is rigid with the link or toggle arm f1; and another link or toggle arm f2 which has its lower end pivotally connected with the link or arm e, by a bolt f3; and the upper end of this link or toggle arm f2 is pivotally connected by abolt f4 with the arm f1, the latter being provided with a stop f5 which tends to prevent the toggle thus formed from breaking oint in a forward direction, this stop engaging the arm f2, as shown more clearly in Fig. 5. This housing is sufliciently high to enable the toggle to break slightly forward beyond its dead center so that it will lock and maintain the plow in its raised position. When the plow is out of the ground the toggle connection consisting of the arms f1, f2 are in a straightened condition, as shown in F ig. 2, and the toggle consisting of the arms E, c is in a break joint condition, as previously explained.

W hen the plow is in the ground the toggle connection consisting of the arms f1 f2 is in a break oint condition, while the other toggle connection consisting of the arms E, e is in a straightened condition, as shown in Fig. 3. In this way, the toggle operated by the foot lever F is adapted to lock the plow out of the ground, while the toggle operated by the foot lever e3 is adapted to lock the plow in the ground. With this arrangement a powerful and effective lifting leverage is obtained, the lifting foot lever c3 being always conveniently situated relative to the operator. At the same time the plow is yieldingly held in both its raised and lowered positions. A. slight forward push on the foot lever F is sufficient to cause the toggle arms f1, f2 to break joint in a rearward direction, thus allowing the toggle arms E, c to straighten out, as shown in Fig. 3. In this way a simple and effective arrangement is provided for raising and lowering the plow. To assist in straightening out the lifting toggle, l provide a spring @r attached in the following manner. A hanger H, sleeves on the landside axle I immediately back of the bracket which supports this aXle. This arm is provided at its upper end with a hook 7L and at its lower end with a boss or arm h1. This boss is provided with a slotted hole h2 within which a bolt h3 passes and engages a lug 7a4 of the landside axle I. A lug e6 is cast on the barrel portion of the toggle arm E. One end of the spring G is secured to the hook h, the spring passes back of the landside aXle inside of the frame bar A and hooks into the lug @Gl By screwing up the nut if on the bolt h3 tension is given to the spring Gr. By properly regulating the spring the toggle arm is more readily straightened and the plow locked more securely in the ground.

Figs. 9 and l2 show the method of attach ing the lifting sprino. Fig. 9 shows the position of the parts when the plow is raised to the highest position, and Fig. 12 when the plow is lowered to working position. It will be noted that the spring .M is attached to the rear of the frame by an adjustable or threaded hook m, to the rear post N aud attached to the rear bail O about midway of its shaft or horizontal portion by a hook l having two arms 711, between which the bail O passes, and which are clamped firmly to the bail by means of the clamping bolt y), In Fig. 9 this hook or arm l hangs downwardly from the bail in nearly a perpeudicular position. As the plow is lowered and the bail swings forward, there is a slight rotation of the shaft or horizontal part of the bail turning the lower or hooked end of the arm P back toward the post N or the other point of connection of the spring. If this spring were attached directly to the bail at the same point where the arms are clamped, the spring would be under its maximum tension and pulling at its greatest strength when the plows are down, as in Fig. l2, and when the plows are raised, as in F ig. E), it would be practically without li ile or rendering no assistance to the lifting oi' the plow as the plows neared its highest position. By the use of the hooked end, however, hanging from the bail, as the bail is turned the arm has a receding motion and approaches nearer the post N. By the use of this arm l con` siderable life is kept in the spring at all times.

Unnecessary tension is cut out of the spring when the plow is in its lowest position by the hook or arm P having approached the post N, while considerable tension is left iu the spring when the plow`is in its highest position on account of the end of the hooi; or arm P having receded from the post N. By this means an almost constant or equal tension of the spring is maintained in both positions. This is an important feature, as the greatest strength or up-pull of the spring is removed when the plows ar'e down and yet the spring has considerable tension or assisting power just at the time it is needed the most, which is at the time the plows are being locked in their raised position.

That I claim as my invention is:

l. In a wheeled plow, the combination of a pair of toggle arms, a lifting foot lever rigid with one of said toggle arms and applied to the toggle joint between the same, another pair of'toggle arms, one arm of the secondpa-ir being connected with an arm of the first pair, and a depressing foot lever rigid with one of the toggle arms of the second pair, each pair of toggle arms adapted to break joint when the other pair is straightened out.

2. In a wheeled plow, the combination of a toggle connection for raising the plow, a lifting foot lever mounted upon and applied directly to the toggle joint of said connection, and a depressing foot leverhaving ay ltoggle connection with the said lifting foot ever.

3. In a wheeled plow, the combination of a toggle connection and spring mechanism for raising the plow, a liftingk foot lever mounted upon and applied directly to the toggle joint of said connection, and a depressing foot lever having a toggle connection with the said lifting foot lever.

4f. In a wheeled plow, the combination of a toggle connection and spring mechanism for raising the plow, a lifting' foot lever mounted upon and applied directly to the toggle joint of said connection, a depressing foot lever having a toggle connection with the said lifting foot lever, and means for va-y rying the tension of said spring. j

5. In a wheeled plow, the combination of a toggle connection for raising the plow, a lifting foot lever mounted upon and applied directly to the toggle joint of said connection, a depressing foot lever having a toggle connection with the said lifting foot lever, a hanger adjustably mounted on theL frame, and a spring connecting said hanger and toggle. 1

'6. In a wheeled plow, the combination with a frame, a bail of a lifting spring aoljustably connected to said frame and bail, a toggle connection for raising the plow, la lifting foot lever mounted upon and applied directly to the toggle joint of said connection, and a depressing foot lever having a toggle connection with the said lifting foot lever.

7. In a wheeled plow, the combination with a frame, a bail of a hook member clamped to said bail of a lifting spring ad-V justably connected at one end of said frame and the other end of said hook, a toggle connection for raising the plow, a lifting foot .lever mounted upon and applied directly to the toggle oint of said connection, and a depressing foot lever having a toggle connection with the said lifting foot lever.

8. In a wheeled plow, the combination with a frame, a bail of a lifting spring adjustably connected to said frame and bail, a

toggle connection for raising the plow, a r

lifting foot lever mounted upon and applied directly to the toggle joint of said connection, a depressing foot lever having a toggle connection with the said lifting foot lever, and means for releasing the tension of said spring when the plow is in the ground.

9. In a rwheeled plow, the combination with a frame, a bail of a lifting spring adjustably connected to said frame and bail, a toggle connection for raising the plow, a lifting foot lever mounted upon and applied directly to the toggle joint of said connection, a depressing foot lever havin a toggle connection with the said lifting fgoot lever,

and means for releasing the tension of said spring when the plow is in the ground, said means comprising a hook clamped to sald bail `and adapted to swing rearwardly when the plow is lowered. 

